Closure for receptacles



Pa'tented Sept. 19, 1950 CLOSURE FOR RE-CEPTACLES Louis T. Knocke, Detroit, Mich., assignor to `'Chrysler yCorporation,Highland Park, Mich., a corporation of Delaware Application November 16, 1946, Serial No. 710,375

This invention relates to receptacles for liquid and more particularly to improvements in the drain opening and closure therefor.

An object of the invention is the provision of 2 Claims. (Cl. 2220-39) nous end portion Il), the internal surface of which is threaded., and circumferentially alternate legs II and gaps I2 extending downwardly from such end portion. Each leg II is deflected a receptacle from which the liquid content 5 radially outwardly to provide a terminal flange thereof can be completely drained without the I3 which abuts the interior surface of the wall necessity of relatively deforming the wall conl and is secured thereto, for example by projectaining the drain opening. tion welding as indicated at I4. The gaps I2 Motor vehicles include a tank for gasoline as terminate flush with the interior surface of the well as an engine pan providing a lubricant rel wall 'I and thus permit complete drainage of the ceptacle, and it is desired that the content of content of the tank therethrough to the wall each be completely drained therefrom. Furopening 8, it being understood that liquid flows thermore, the drain` closure should have the between each pair of adjacent flanges I3 to a maximum of road clearance Therefore, an obgap l2. ject of the invention is to provide such recepl5 The plug, generally designated by the numeral taeleS With a drain opening and oiOSlne having I5, for closing the opening includes a tubular the above desired CharaCteriStiCS; t0 DloVide el body part I6 which is projected through the drain Closure Which Can be readily applied and Te* opening 8 into the nut 9 and has an external InOVed 'and having an eXtelnal C0nt0lll Willen surface in threaded engagement with the interwill minimize the danger of damage or loss when nally threaded part of the nut. The end l1 of unintentionally engaged with a road surface; the plug is closed and the other end thereof is and to provide a Sealing gasket between the Cloopen, being provided with a hexagonal internal sure and receptacle drain opening which is oomsurface, as shown in Fig. 3, to receive a suitable nletelv shielded by the Closure but may limit manipulating tool for installing and removing now relative thereto under pressure therefrom. the plug Ai, Jthis open end the piug has an an- Other objects 'and advantages of the inVennular radial flange IB extending outwardly betion Will be nlol'e apparent flOIn the OiiOWing yond the opening 8 to overlap the external surdescription taken in connection with the aeface of wall 1, and has a nat face I9 which abuts Companyng drawings, in which: the latter. The iiange I8 is arcuate in cross- Fig. 1 iS a Side eievatiOnai View 0f a 1eCel0taC1e 30 section and has an annular recess 20 at the conelnbedying the invention. cave side thereof between the face I9 and body Fg- 2 is an enlarged fragmentary Sectional I6 in which is positioned a sealing gasket 2l View in elevation taken as indicated by line which is Compressed between fiange ls and wall 2-2 of Fig. 1. 1 when the plug I5 is assembled as shown. While Fig. 3 is a top plan View of Fig. 2. 35 the gasket is thus shielded and retained by the Fig. 4 is a sectional elevational view of the plug, nevertheless the recess is sufficiently large closure receiving nut Shown in Fig 2- radiallir relative to the gasket as to permit a Referring to Fig. 1. the invention is illustrated limited deection or flow of the material thereof in connection With a gasoline tank 5 fOl a InO- under pressure. The external surface of flange tor Vehicle, although the invention is not lim- 40 i8 adjacent the Oui-,er edge thereof has an aiguited in its broad aspect to this particular type cate contour as at 22 to minimize the likelihood of receptacle. The tank 5 has. the usual filler of the plug being damaged by Contact With road neck 6 and a bottom wall 'l in which the drain surface By removing the plug, the entire fluid opening 8 iS formed, aS Shown in Fig- 2, Snell content of the receptacle can be drained as the wall being so lowered as to provide a Sump for passages between flanges I'3 are at the level of the collection of non-combustible liquid in acthe inner Surface of wail 1 and the openings l2 cordance with well known practice. However, are ais@ ihereat the contour of the wall 1 is not otherwise inter- 1 claim; rupted by relatively deflecting portions thereof 1, In a, liquid recept-,nele including a bottom adjacent the opening 8. wall having a substantial area thereof extending A SieeVe-iike nut, generally designated by the at a uniform elevation and having a drain opennlllnelel 9, iS DOSitiOned Wiifhn the tank 5 dllling Within said area, a closure for said opening ing fabioation of the latter With the Opening including a nut within the receptacle having a thereof in registration With drain opening 3- body part provided with a central opening aligned The nut 9 includes va ciroumferentiallv eontin- 55 with said drain opening, said body part including an internally threaded circumferentially continuous upper end portion and a lower end portion having a plurality of slots, anges integral with and radiating outwardly from said lower portion seated on the internal surface of said wall at said area, and secured thereto, adjacent flanges being circumferentially spaced apart to provide a passage therebetween` for the ow of uid in contact with the inner surface of said wall at said area, said slots in said lower body portion respectively registering with said pas-- sages and cooperating therewith to accommodate the flow of fluid to said drain opening, all components of said nut being; positioned entirely above the elevation of said area, andI a closure plug including a body part extending through said drain opening into the central openingv of said nut body part and in thread-ed' engagement with said continuous end portion, said plug` having a flange extending radially from the said body thereof and abutting the outer surface of said wall at'said area.

2. The construction as defined in claim. 1, wherein the plug radial flange has a flat facey at 4 the outer periphery thereof abutting the external surface of said Wall, said ange being of arcuate cross section intermediate said flat face and said body part and having its concave side facing said wall, and a seal between said concave face and said Wall.

LOUIS T. KNOCKE.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

